Using semidualizing complexes to detect Gorenstein rings
Commutative Algebra
2015-04-10 v3
Abstract
A result of Foxby states that if there exists a complex with finite depth, finite flat dimension, and finite injective dimension over a local ring , then is Gorenstein. In this paper we investigate some homological dimensions involving a semidualizing complex and improve on Foxby's result by answering a question of Takahashi and White. In particular, we prove for a semidualizing complex , if there exists a complex with finite depth, finite -projective dimension, and finite -injective dimension over a local ring , then is Gorenstein.
Cite
@article{arxiv.1412.7125,
title = {Using semidualizing complexes to detect Gorenstein rings},
author = {Sean Sather-Wagstaff and Jonathan Totushek},
journal= {arXiv preprint arXiv:1412.7125},
year = {2015}
}
Comments
6 pages, comments welcome; v.2 added reference; v.3 minor changes from referee